According to Finland's Natural Resources Institute, potato stocks are running low compared with production levels from previous years, pushing up prices.
During the summer, rains and cool weather had a negative impact and the average yield was much smaller than usual in the main production areas in Ostrobothnia.
This year's crop was 26 metric tons (MT).
A frosty October for Finland
A period of frost last month has been described as 'disastrous' for potatoes in Kokkola where sub-zero temperatures for four consecutive nights (with the lowest recorded at minus six degrees) damaged vegetables and pushed back harvesting.
Potatoes already in storage will also need to be re-sorted because frost damage is often only visible after a while.
On a more positive note, quality is classified as good with ideal sizes.
However, the scarcity of potatoes has increased farmer prices in general with producers being paid €22 (US$23.69) per 100kg during September.
According to the institute's statistics, 72% of the potato growing area and 74% of food potato storages were located in regions by the Ostrobothnia.